#include "muduo/proto/dispatcher.h"
#include "muduo/proto/codec.h"
#include "muduo/base/Logging.h"
#include "muduo/base/Mutex.h"
#include "muduo/net/EventLoop.h"
#include "muduo/net/TcpClient.h"
#include "muduo/net/EventLoopThread.h"
#include "muduo/base/CountDownLatch.h"

#include "request.pb.h"
#include <iostream>

class Client
{
    public:
        typedef std::shared_ptr<google::protobuf::Message> MessagePtr;
        typedef std::shared_ptr<xyp::TranslateResponse> TranslateResponsePtr;
        typedef std::shared_ptr<xyp::AddResponse> AddResponsePtr;
        Client(const std::string &sip,int sport):
            _latch(1),_client(_loopthread.startLoop(),muduo::net::InetAddress(sip,sport),"Client"),
             _dispatcher(std::bind(&Client::onUnknownMessage,this,std::placeholders::_1,std::placeholders::_2,std::placeholders::_3)),
            _codec(std::bind(&ProtobufDispatcher::onProtobufMessage, &_dispatcher, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3))
            {
                 _dispatcher.registerMessageCallback<xyp::TranslateResponse>(std::bind(&Client::onTranslate,this,std::placeholders::_1,std::placeholders::_2,std::placeholders::_3));
                _dispatcher.registerMessageCallback<xyp::AddResponse>(std::bind(&Client::onAdd,this,std::placeholders::_1,std::placeholders::_2,std::placeholders::_3));
                _client.setMessageCallback(std::bind(&ProtobufCodec::onMessage, &_codec, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3));
                _client.setConnectionCallback(std::bind(&Client::onConnection,this,std::placeholders::_1));
            }
            //连接服务器，需要进行阻塞等待连接建立成功之后再进行返回
            void connect()
            {
                _client.connect();
                //阻塞等待
                _latch.wait();
            }
            void Translate(const std::string &msg)
            {
                xyp::TranslateRequest req;
                req.set_msg(msg);
                send(&req);
                
            }
            void Add(int num1,int num2)
            {
                xyp::AddRequest req;
                req.set_num1(num1);
                req.set_num2(num2);
                send(&req);
            }
    private:
        bool send(const google::protobuf::Message *message)
        {
            if(_conn->connected())
            {
                _codec.send(_conn,*message);
                return true;
            }
            return false;
        }
        void onTranslate(const muduo::net::TcpConnectionPtr& conn, const TranslateResponsePtr& message,muduo::Timestamp)
        {
            std::cout<<"翻译结果为："<<message->msg()<<std::endl;
        }
        void onAdd(const muduo::net::TcpConnectionPtr& conn, const AddResponsePtr& message,muduo::Timestamp)
        {
            std::cout<<"加法结果为："<<message->result()<<std::endl;
        }
        void onUnknownMessage(const muduo::net::TcpConnectionPtr& conn, const MessagePtr& message,muduo::Timestamp)
        {
            LOG_INFO << "onUnknownMessage: " << message->GetTypeName();
            conn->shutdown();
        }   
         //连接建立成功时候的回调函数，建立成功的时候，唤醒上面的阻塞
         void onConnection(const muduo::net::TcpConnectionPtr&conn)
         {
            if(conn->connected())
            {
                _latch.countDown();
                _conn=conn;
            }
            else
            {
                //连接操作关闭
                _conn.reset();
            }
         }
    private:
        muduo::CountDownLatch _latch;//处理同步
        muduo::net::EventLoopThread _loopthread;//处理异步
        muduo::net::TcpConnectionPtr _conn;//客户端对应的连接
        muduo::net::TcpClient _client;//客户端
        ProtobufDispatcher _dispatcher;//请求分发器
        ProtobufCodec _codec;//协议处理器
};

int main()
{
    Client client("127.0.0.1",8085);
    client.connect();

    client.Translate("hello");
    client.Add(11,22);

    sleep(1);
    return 0;
}